Campanula plant named ‘Allgentitwist’

ABSTRACT

A new and distinct cultivar of  Campanula  plant named ‘Allgentitwist’ characterized by its broadly upright plant habit; freely basal branching habit; freely and uniformly flowering habit; campanulate-shaped flowers with violet-colored petals and white-colored sepals giving a bi-colored appearance; and good garden performance.

Botanical designation: Campanula glomerata.

Cultivar denomination: ‘ALLGENTITWIST’.

BACKGROUND OF THE INVENTION

The present invention relates to a new and distinct cultivar of Campanula plant, botanically known as Campanula glomerata and hereinafter referred to by the name ‘Allgentitwist’.

The new Campanula is a product of a planned breeding program conducted by the Inventor in Cuijk, The Netherlands. The objective of the breeding program is to create new freely flowering Campanula plants with attractive inflorescences and good garden performance.

The new Campanula plant originated from an open-pollination in Cuijk, The Netherlands during June, 2009 of a proprietary selection of Campanula glomerata identified as code number 6-3-21, not patented, as the female, or seed, parent with an unknown selection of Campanula glomerata as the male, or pollen, parent. The new Campanula was discovered and selected by the Inventor as a single flowering plant from within the progeny of the stated open-pollination grown in a controlled outdoor nursery in Cuijk, The Netherlands in June, 2011.

Asexual reproduction of the new Campanula plant by tissue culture in The Netherlands, since July, 2011 has shown that the unique features of this new Campanula plant are stable and reproduced true to type in successive generations.

SUMMARY OF THE INVENTION

Plants of the new Campanula have not been observed under all possible environmental conditions and cultural practices. The phenotype may vary somewhat with variations in environmental conditions such as temperature and light intensity without, however, any variance in genotype.

The following traits have been repeatedly observed and are determined to be the unique characteristics of ‘Allgentitwist’. These characteristics in combination distinguish ‘Allgentitwist’ as a new and distinct Campanula plant:

-   -   1. Broadly upright plant habit.     -   2. Freely basal branching habit.     -   3. Freely and uniformly flowering habit.     -   4. Campanulate-shaped flowers with violet-colored petals and         white-colored sepals giving a bi-colored appearance.     -   5. Good garden performance.

Plants of the new Campanula differ from plants of the female parent selection in the following characteristics:

-   -   1. Flowers of plants of the new Campanula have violet-colored         petals whereas flowers of plants of the female parent selection         have blue-colored petals.     -   2. Flowers of plants of the new Campanula have white-colored         sepals whereas flowers of plants of the female parent selection         have green-colored sepals.

Plants of the new Campanula can be compared to plants of Campanula glomerata ‘Allgentibl’, disclosed in U.S. Plant patent application Ser. No. 13/694,021. Plants of the new Campanula differ primarily from plants of ‘Allgentibl’ in the following characteristics:

-   -   1. Flowers of plants of the new Campanula had violet-colored         petals whereas flowers of plants of ‘Allgentibl’ had purple         violet-colored petals.     -   2. Flowers of plants of the new Campanula had white-colored         sepals whereas flowers of plants of ‘Allgentibl’ had         green-colored sepals.

BRIEF DESCRIPTION OF THE PHOTOGRAPHS

The accompanying colored photographs illustrate the overall appearance of the new Campanula plant showing the colors as true as it is reasonably possible to obtain in colored reproductions of this type. Colors in the photographs may differ slightly from the color values cited in the detailed botanical description which accurately describe the colors of the new Campanula plant.

The photograph on the first sheet is a side perspective view of a typical flowering plant of ‘Allgentitwist’ grown in a container.

The photograph on the second sheet is a close-up view of typical leaves of ‘Allgentitwist’.

The photograph on the third sheet is a close-up view of typical developing inflorescences of ‘Allgentitwist’.

The photograph on the fourth sheet is a close-up view of typical developed inflorescences of ‘Allgentitwist’.

DETAILED BOTANICAL DESCRIPTION

Plants used for the aforementioned photographs and following description were grown during the early summer in an outdoor nursery in Cuijk, The Netherlands and under cultural practices typical of commercial production conditions. Plants used for the photographs were grown in 13-cm containers and plants used for the description were grown in ground beds. During the production of the plants, day temperatures ranged from 15° C. to 28° C. and night temperatures ranged from 6° C. to 18° C. Plants were two years old when the photographs and description were taken. In the following description, color references are made to The Royal Horticultural Society Colour Chart, 2007 Edition, except where general terms of ordinary dictionary significance are used.

-   Botanical classification: Campanula glomerata ‘Allgentitwist’. -   Parentage:     -   -   Female parent.—Proprietary selection of Campanula glomerata             identified as code number 6-3-21, not patented.         -   Male parent.—Unknown selection of Campanula glomerata, not             patented. -   Propagation:     -   -   Type.—By tissue culture.         -   Time to initiate roots, summer.—About 20 days at 6° C. to             28° C.         -   Time to initiate roots, winter.—About 25 days at 6° C. to             28° C.         -   Time to produce a rooted young plant, summer.—About 30 days             at 6° C. to 28° C.         -   Time to produce a rooted young plant, winter.—About 35 days             at 6° C. to 28° C.         -   Root description.—Fine, fibrous; white in color.         -   Rooting habit.—Moderately freely branching; medium density. -   Plant description:     -   -   Plant and growth habit.—Herbaceous perennial; broadly             upright plant habit; freely basal branching habit with about             15 basal branches developing per plant; moderately vigorous             growth habit; campanulate flowers arranged in compound             racemes.         -   Plant height.—About 51.5 cm.         -   Plant width.—About 40 cm.         -   Basal branch description.—Aspect: About 5° from vertical.             Length: About 42.5 cm. Diameter: About 5 mm. Internode             length: About 3.4 cm. Strength: Strong. Texture: Moderately             pubescent. Color: Close to 144C to 144D with longitudinal             stripes, close to 143B and 144A and strongly tinged with             close to 178A to 178B. -   Foliage description:     -   -   Arrangement.—Alternate, simple.         -   Length.—About 11.5 cm.         -   Width.—About 3.3 cm.         -   Shape.—Narrowly ovate to lanceolate.         -   Apex.—Acute.         -   Base.—Attenuate.         -   Margin.—Serrate.         -   Texture, upper and lower surfaces.—Moderately pubescent;             rough; slightly rugose.         -   Venation pattern.—Pinnate.         -   Color.—Developing leaves, upper surface: Close to N137A to             N137B with irregular marbling, close to 157C to 157D.             Developing leaves, lower surface: Close to 137A to 137B with             irregular marbling, close to 157C to 157D. Fully developed             leaves, upper surface: Close to N137A; occasionally and very             slightly with irregular marbling, close to 157A to 157B;             venation, between 147D and 148D. Fully developed leaves,             lower surface: Close to 147B; venation, close to 144A.         -   Petioles.—Basal leaves, petiolate; upper leaves, sessile.             Length: About 4.3 cm. Diameter: About 1.5 mm. Texture, upper             and lower surfaces: Sparsely pubescent. Color, upper and             lower surfaces: Close to 144C; towards the margins, close to             144A. -   Flower description:     -   -   Flower arrangement and shape.—Single campanulate sessile             flowers arranged in axillary and terminal racemes; flowers             face mostly upright to slightly outwardly; freely flowering             habit with about 22 flowers developing per terminal             inflorescence and about ten flowers developing per axillary             inflorescence.         -   Natural flowering season.—Plants begin flowering about nine             months after planting; in the garden, flowering continuous             from late May to early August in The Netherlands.         -   Flower longevity on the plant.—About ten days; flowers             persistent.         -   Fragrance.—None detected.         -   Inflorescence height.—About 4.3 cm.         -   Inflorescence diameter.—About 5.5 cm.         -   Flower buds.—Length: About 1.8 cm. Diameter: About 1.5 cm.             Shape: Oblong to narrowly obovate. Color: Developing petals;             developing sepals, close to 155A.         -   Flower diameter.—About 1.4 cm.         -   Flower length (height).—About 3.5 cm.         -   Petals.—Arrangement: Five in a single whorl; lower 60% of             petal length fused. Length: About 3.1 cm. Width, base of             free part of the petal: About 5 mm. Shape: Narrowly oblong.             Apex: Acute. Margin: Entire. Texture, upper (inner) surface:             Sparsely pubescent. Texture, lower (outer) surface: Smooth,             glabrous. Color: When opening, upper (inner) surface: Close             to N87A. When opening, lower (outer) surface: Close to N87A;             towards the base, close to N87C. Fully opened, upper (inner)             surface: Close to N87A flushed with close to N87C to N87D.             Fully opened, lower (outer) surface: Close to N87A; towards             the base, close to N87C and flushed with close to N87D;             color does not fade with development.         -   Sepals.—Arrangement: Five in a single campanulate whorl;             lower 10% of sepals fused. Length: About 1.3 cm. Width, base             of free part of the sepal: About 3 mm. Shape: Lanceolate.             Apex: Narrowly acute. Margin: Entire. Texture, upper and             lower surfaces: Smooth; dense pubescence along the margins.             Color: When developing, upper and lower surfaces: Close to             155C. Fully developed, upper and lower surfaces: Close to             155C; towards the apex, close to 157D.         -   Peduncles.—Length: About 2 mm. Diameter: About 2 mm. Aspect:             Terminal inflorescences, upright; axillary inflorescences,             40° from stem axis. Strength: Strong. Texture: Slightly             pubescent. Color: Close to 144C.         -   Reproductive organs.—Stamens: Quantity per flower: Five.             Filament length: About 2 mm. Filament color: Close to             NN155C. Anther length: About 6 mm. Anther shape: Lanceolate.             Anther color: Close to 4B. Pollen amount: Moderate. Pollen             color: Close to 4D. Pistils: Quantity per flower: One.             Pistil length: About 2 cm. Stigma shape: Three-parted;             decurrent. Stigma color: Close to 195D. Style length: About             1.8 cm. Style color: Close to 196D. Ovary color: Close to             145B to 145C.         -   Seeds and fruits.—Seed and fruit production have not been             observed on plants of the new Campanula. -   Disease & pest resistance: Plants of the new Campanula have not been     observed to be resistant to pathogens and pests common to Campanula     plants. -   Garden performance: Plants of the new Campanula have exhibited good     tolerance to rain and wind, are hardy to USDA Hardiness Zone 3 and     have been observed to tolerate high temperatures up to 35° C. 

It is claimed:
 1. A new and distinct Campanula plant named ‘Allgentitwist’ as illustrated and described. 